Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Que tipo de instituição é o colégio San Diego Christian?
 ###Tabelas: CREATE TABLE season_4_1958_59 (season_4_1958_59_id AUTO_INCREMENT PRIMARY KEY, Series # INT, Season # INT, Title VARCHAR, Director VARCHAR, Writer(s) VARCHAR, Airdate VARCHAR) CREATE TABLE locomotives_of_the_early_period_for_all_types_of_train (locomotives_of_the_early_period_for_all_types_of_train_id AUTO_INCREMENT PRIMARY KEY, Class VARCHAR, Number(s) VARCHAR, Quantity VARCHAR, Year(s) of Manufacture VARCHAR, Type VARCHAR) CREATE TABLE thames-coromandel_district (thames-coromandel_district_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Years VARCHAR, Gender VARCHAR, Area VARCHAR, Authority VARCHAR, Decile INT, Roll INT) CREATE TABLE farm_team_league (farm_team_league_id AUTO_INCREMENT PRIMARY KEY, Position INT, Club VARCHAR, Games played INT, Wins INT, Draws INT, Loses INT, Goals scored INT, Goals conceded INT, Points INT) CREATE TABLE current_members (current_members_id AUTO_INCREMENT PRIMARY KEY, Institution VARCHAR, Location VARCHAR, Type VARCHAR, Joined INT, Enrollment INT, Nickname VARCHAR)  
SELECT Type FROM current_members WHERE Institution = San Diego Christian College